Engadget - "Our own source wouldn't directly confirm that it's a five-inch display on this mysterious phone, but we were told that it'll be somewhere between 4.5 inches and 5.5 inches -- we'll take that as a yes, especially since the only 1080p mobile panels available right now are the five-inch, 440ppi ones from Sharp and JDI."

According to GSMArena, the phone is in "its final stages of development and would be officially announced in China shortly". There's no mention so as to when the device will be released, but Q1-Q2 time-frame next year would be a good bet.